Cop winding machine



July 2, 1940.

R. SHIPMAN COP WINDING MACHINE Filed lay 23, 1935 6 Sheets-Sheet 1 H, P L 3 1 L I/ l I I I I I I I I I I HP i l l l lH u. w. J. I m l ll h II l I l .rnl

July-2, 1940. R. SHIPMAN GOP WINDIQJQIACHINE Filed lay 23, 1935 6 Sheets-Sheet 2 as 8 Q Q? .,...PW.F ,.HH.v H J v Q a. L

July 2, 1940. R. SHIPMAN 7 2,296,582

00? WINDING IACHI NE Filed lay 23, 1935 s sheets-skeet s a R SHIPMAN 06 582 GOP WINDING MACHINE Filed Kay 2 9 35 Sheet 4 "'00 M mf fofofxmmmom,

July 2, 1940. R. SHIPMAN r 2,206,532,

COP WINDING MACHINE Filed May 23, 1935 6 Sheets-Sheet 5 s W LMM MM y 940. R. SHIPMAN 2,206,582

COP WINDING MACHINE Filed May 25, 1935 6 Sheets-Sheet 6 Y Patented July 2,

UNITED STATES 2,200.68: cor wmpnvo momma Ralph Shlpman, Sunbury, Pa., assignor to Unlversal Winding Company, Boston, Mala, a corporation of Massachulet Application May 2a. 1935. sci-a1 No. 23,68:

- .zscmm. (01. 242-43) This invention relates to winding machines for producing cops, bobbins or packages. of thread, yarn, cord or the like.

In this specification, the word thread will 5 be used as including any kind of a filament or strand to be wound, and the word "cop will be employed as a generic term for any kind of a package, into which the thread maybe formed.

For use in certain types of textile machinery, it

has been found desirable to wind cops or bobbins in such a way that the ends of the thread mass are beveled or inclined, as distinguished from being disposed at right angles to the surface of the cop. To produce cops having beveled ends ll of this character, it has heretofore been proposed to provide mechanism for progressively shortening the effective stroke or traverse of the thread guide as the diameter of the cop increases. I

One object of the present invention is to dego vise improved mechanism for thus progressively shortening the effective stroke of the thread guide, which mechanism shall be simpler, lighter, freer from vibration, more efllcient and cheaper to construct than those heretofore known.

.25 A further object of the invention is to provide traverse shortening mechanism which can be applied to commercial types of winding machines now in common use without requiring any substantial alteration in thestructure or arrangeao ment of such existingmachines.

While I have illustrated and described the invention as applied to the winding of conical cops, and while certain features of the invention are specifically applicable only to cops of this type,

38 it will be understood that in its broader aspects my invention is adapted for use in the winding of cylindrical cops or bobbins as well.

In order that the invention may be readily understood, reference is had tothe accompany- 40 ing drawings forming part of this specification and in which:

Fig. 1 is a side elevation of one side of. a well known type of winding machine showing my improved attachment applied thereto;

45 Fig. -2 is a similar elevation of the other side of package which can be produced by the use of my improved attachment:

Fig. 8 is a front elevation on an enlarged scale showing my improved thread guide itself and the controlling means therefor; r

Fig. 9 is a rear elevation of the same; Fig. 10 is a fragmentary section on the line ill-ll of Fig'. 8, also showing the traverse bar; Fig. 11 is a transverse section on the line I l-l I of Fig. 8, looking in the direction of the arrows: 10

- Fig. 12 is a transverse section on the line I 2-l 2 of Fig. 9, looking in the direction of the arrows;

Fig. 13 is a fragmentary sectional end elevation similar to Fig. 3, showing a modified construction, many parts being omitted for the sake of clearness;

Fig. 14 is a fragmentary side elevation of the construction shown in Fig. 13; and

Fig. 15 is a perspective view of one of the parts illustrated in Figs. 13 and 14.

Referring to the drawings in detail, and more particularly to Figs. 1 to 4 thereof, the well known type of machine to which my attachment is adapted to be applied comprises a main frame I, in which is journalled a winding spindle 2, car- 5 rying a driving pulley 3, to which power is applied, and a clutch operating mechanism 4, 5 and- 6, controlled by means of a handle or lever I. This lever may be swung in a plane perpendicular to that of the paper as viewed in Figs. 1 and 2, in order to rock the shaft 6, and it may also be swung in a plane parallel to that of the paper,

so that its lower end l operates a chucking device 8 which works inside'of the cone or cop holder 9, and serves to grip the cardboard cone or cop core M which fits over said holder.

A pulley ll, driven from the pulley 3, serves to transmit power by means of a belt I2 to another pulley l3 which, by means of reducing gearing ll, drives a cam shaft It, on which is secured 40 the traverse operating cam I5' having at its periphery a helical groove, as shown in Fig.1.

The machine also comprises a swinging frame consisting of a horizontal portion I6, supported by a pair of arms I! journalled on the cam shaft 46 I5 Toone of these arms is secured a counter weight II. By reference to Figs. 3 and 4, it will be understood that the entire frame l6, I1, I; and associated parts is capable of swinging about the cam shaft' l5 as a center.

Mounted to reciprocate on the frame it is a sliding block or cross head It carrying a pin or roller 28- adapted to engage the groove of the cam l5, and rigidly secured to the block it is a traverse bar 2| (see Fig. 10). Set into the end of this traverse bar is a clamping screw 22 :ghich serves to secure the thread guide in posi- Mounted on the main frame I are adjustable stops 23 and 24, which serve to limit the swinging movement of the frame l6, H (see Figs. 3 and 4). Associated with the swinging frame is an arcuate track 26 with the under side of which engages a brake shoe or pawl (not shown), for the purpose of preventing the frame l6, I! from swinging freely toward the winding spindle, the brake or pawl being releasable by means of a rock shaft carrying an operating lever 21.

Secured to the swinging frame 16 is a backing plate 28, the function of which is to guide and direct the thread guide as it reciprocates, and, where the cop being wound of conical form, the upper edge of this backing plate is usually made substantially parallel with the surface of the cone, thus giving to the plate a skew or warped form.

None of the mechanism so far described forms any part of my present invention, but is embodied in well known existing commercial machines, such, for example, as are substantially shown in expired Patents Nos. 1,236,464, Marcroft, dated August 14, 1917, and 1,258,824, Taylor, dated March 12, 1918. These patents also 1g bracket 42, secured to a plate 43 which in turn is illustrate common forms of thread guides which have heretofore been employed.

Instead of the common forms of thread guide as illustrated, for example, in the above patents, I have devised the improved construction shown in the accompanying drawings and more particularly in Figs. 8 to 12 thereof.

My improved thread guiding mechanism comprises a plate or member 29, having at its lower end an extension 30 adapted to enter a slot in the traverse rod 2| and be secured therein by means of the set screw 22. The upper end of the member 29 is bent over, as shown at 31, so as to slid- ;lgly engage the upper edge of the backing plate Pivotally secured to the member 29, by means of an-angularly disposed rivet 34 or the like, is my improved thread guiding member which is in the form of a bell crank and comprises an upstanding arm 32 and a laterally extending arm 33. A thread engaging eye 35, of the usual or any desiredconstruction, is secured to the upper end of the member 32. A disk 32 may be interposed between the members 29 and, 32, as shown in Figs. 10 and 12..

In order to guide the member .32 in its swinging movements about the pivot 34, and to provide a slight frictional drag to steady the same, I preferably form the member 32 with laterally projecting wings 32 adapted to engage a projection 29' pressed out from the body of the member 29, as clearly shown in Figs. 8, 9 and 12.

For the purpose of controlling the angular position of the thread guiding member 32, I secure to the arm 33, as by means of a rivet 31, a

.U-shaped bracket 36, and this is arranged to embrace and slide freely on a guide bar 38.

By reference to the drawings, and more particularly to Figs. 5 and 6, it will be seen that this guide bar is of substantially U-shape and comprises a relatively long leg 38, which is engaged by the bracket 36, as above described, and a relatively short leg 39, substantially parallel therewith, which is mounted, by means of a .set screw 43, on a pivot or rock shaft 48, journalled in a attached to the frame 16 by means of a pair of screws 44 (see Fig. 1).

Also by reference to Fig, 1, it will be noted that the bracket 42 is provided with a plurality of sets oi openings 4| adapted to receive the rock shaft 40, so that the position of the pivot about which the guide bar 38, 39 swings can be shifted longitudinally of the winding spindle or cop holder.

In making this adjustment, the set screw 40 is' loosened and the leg 39 of the guide bar slipped one way or the other, as may be necessary for the changed position of the pivot, and then the set screw is tightened again.

Attention may be called at this point to the fact that the bent portion of the guide bar between the legs 38 and 39 thereof constitutes in effect a bow spring so that the arm 38 is resiliently supported on the pivot 40. This resilience tends to reduce vibration and increase the smoothness with which the mechanism operates.

A spring 45, attached at one end to any one of a series of holes 4.": in the leg 39 of the guide bar, and at its other end to a bracket 46 secured to the lever 21, serves to put tension on the guide 'bar so that the left hand end, as viewed in Figs.

5 and 6, is urged upwardly.

At this left hand end of the leg 38 of the guide bar is formed a circular pintle 41 and this loosely engages a hole in a cam plate 48 pivoted at one end, as indicated at 49, to a bracket 59 projected from the plate 43 (see Fig. 1). At its opposite end, the plate 48 is formed with a cam slot 5|, 52, adapted to engage and work freely over a pin or stud 53, set into the main frame I of the ma-' chine.

From the foregoing description, and from an inspection of the drawings, the operation of my improved mechanism will be apparent. As the cop builds up, and the frame l6, l1 swings outwardly from the position shownin Fig. 3, which illustrates the beginning of the wind to the position shown in Fig. 4, illustrating the cop when it is nearly completed, the cam slot 5| rides down on the pin 53, thus gradually lowering the left hand end of the guide bar 38, as viewed in Figs. 5 and 6, and gradually rocking the thread guiding member 32 on its pivot 34, thereby progressively decreasing the effective stroke or traverse of the thread guide. This, of course. results in producing successively shorter layers of thread as the cop increases in diameter, and thus forms a cop C having beveled ends as at a and b in Fig. 7.

In practice, the winding of the cone is stopped just before thepin 53 reaches the upper end of the cam slot 5|, and a cop will thus be produced having its ends beveled from the inner to the outer layer of thread, as shown in Figs. 5, 6 and 'l. The purpose of the other leg'52 of the slot, which is substantially on an arc struck around the shaft I5", is to allow the swinging frame to move far enough to permit the ready removal of the finished cop, or to provide space in which the thread may be tied together, should it become broken.

It will also be understood that the position of the pivot 40 relative to the limits of movement of the end of the traverse bar carrying the member 29 will determine the relative form of the two ends of the cop. As shown in Figs. 5 and 6, the position of this pivot is such that the small end of the cone is given a slight bevel, while the base or large end of the cone has a relatively long and gentle taper. If the pivot 40 be shifted to the left, then the small end of the cone will have agreater bevel and the bevel at the large end will be steeper. By suitably positioning the pivot 40 relative to the stroke of the traverse bar or the position of the cop holder, it would, of course, be possible to form a cop with a bevel at one end only. By comparing Fig. 2 with Figs. 5 and 6, it will be seen that when the guide bar 38 is in the uppermost position which it occupies at the beginningv of the winding operation, the left hand limit of the stroke of the thread guide is very close to the large end of the cone, as shown in dotted lines in Fig. 2, while, as the cop increases in diameter, and the bar 33 is lowered,, as shown in Fig. 6, the left hand 'limit of movement of the thread guide becomes progressively further and further from the large end of the cone.

As already stated, it is obvious that my im-. proved attachment can in general be employed for building either cones or cylindrical bobbins with one or both ends bevelled, as desired. The inventionhas, however, been illustrated in connection with the building of conical cops and,

as already explained, in a cone winding machine,

the upper edge of the backing plate 23 usually extends parallel with the surface of the cone. It will be noted that, in addition, as clearly shown in Fig. 10, when my improved attachment is used for cone winding, the thread guiding member 32 is arranged to swing about its pivot 34 in a plane which lies at an acute angle to the axis of the cone. The purpose of this will now be described.

The swinging movement of the thread guide, combined with its rectilinear travel or traverse, results in the thread delivering eye 35 moving along a curved path, with respect to the cop, as indicated by the broken line a: in Fig. 6. The parts are preferably so constructed that this curve crosses the axis 11 of the cone, lying partly above and partly below the same. It is therefore clear that, to cause the thread delivering eye to hug the curved surface of the cop as the thread guide swings on its pivot, said pivot should be so disposed as to cause the plane of oscillation to lie at substantially the same angle to the axis of the cone as does the surface of the cone.

It has been observed, however, that the small end of the cone tends to build up more rapidly than the large end, particularly during the first stages, so that, as winding progresses, the angle which the surface of the thread body makes with the axis of the cone varies slightly. I have found that, by making the angle between the plane of oscillation and axis of the cone somewhat greater than that between the surface of the cone .and such axis, it is possible to compensate for this to a certain extent, and to cause the delivery eye 35 to be maintained at a more uniform distance from the thread body throughout the length of the cone than would otherwise be the case.

The angle between the plane of oscillation of the thread guide and the axis of the cone should therefore usually be at least equal to, and in most cases somewhat larger than that between the surface of the cone and said axis. The latter arrangement is indicated by the dotted lines in Fig. 10. As a result of this angular disposition, the thread guide closely follows the surface of the cop and delivers the thread thereto much ages with square ends are already provided with the screws 44, for securing certain parts in position. In applying my attachment to such machines, therefore, all I have to do is to take out these screws, remove the old parts, mount my improved attachment in position, and replace the screws. Many of the existing machines also have a screw or bolt in the position in which the pin 53 is shown, and it is therefore only necessary to remove this old screw or bolt and insert the pin 53 in its place.

It will therefore be understood that, as shown in Figs. 5 and 6, and as so far described, my attachment comprises the plate 43 and associated parts including the plate 43, the guide bar 33,

39, and the thread guide mechanism 29 to 31,

inclusive, and that these parts can be applied to many existing commercial machines without any structural changes whatsoever.

While in the contruction above described, the pin 53, on which the cam slot 5| works, is shown as fixed, I find that it is sometimes desirable to arrange this pin so that its position may be ad justed.

Such an adjustable arrangement is illustrated in Figs. 13, 14 and 15. As shown in these figures, I, employ, as a pivot for the arcuate member 26, instead of the pin 53, a screw 53 I then provide a bracket 54 bent at its upper end to form a. U-shaped portion 56, 51, adapted toembrace the member 26, and provided adjacent such end with a large elongated opening or slot 55, capable of working freely over a boss 23 projecting from the back of the member 26. The front part or leg 51 of the U-shaped portion is provided with an opening 58 to afford access to the head of the screw 53', and the lower portion of the bracket 54 is provided with an elongated slot 59 capable of working over the screw 23 which holds the stop 23 in position. I

Set into the front part 51 of the bracket an projecting horizontally therefrom is a pin or stud 53 which takes the place of the pin 53 shown in Figs. 2, 5 and 6, so that the cam slot 5|, 52 works over this pin or stud 53.

From the foregoing, t will be understood that the bracket shown in Fig. 15 may be placed in position against the casting I by removing the members 23 and 26, and then replacing them, as shown in Fig. 14, the bracket being clamped in position by means of the same screw 23 that holds the stop 23. It will be apparent that by loosening this screw, the bracket 54 carrying the stud 53 may be adjusted up and down as desired, and may be clamped in adjusted position. The effect of thus raising or lowering the stud 53" is, of course to correspondingly change the clearance between the large end of the cop cone and the point where the winding starts.

It will,.be seen that my improved attachment is extremely simple in construction, light in weight, and relatively cheap to manufacture, and it is thought that the numerous advantages of the invention will be readily appreciated by those skilled in the art without further discussion.

What I claim is: 1

1. In a cop winding machine, the combination with a positively rotated cop holder, a swinging frame, a thread guide mounted on said frame to more accurately than with previous arrange; from said h ld r a the cop builds up,

mentsl This angular mounting of the thread guiding member I regard as an important feature of the'invention.

It will beunderstood that many existing commercial machines now in use for winding packmeans for traversing said thread guide on said frame, and means for progressively decreasing the eflective stroke of said thread guide as the swinging frame and having a cam slot working over a fixed pin, said plate also having a second slot communicating with and disposed at an angle to the first, said second slot permitting said thread guide to move away from the cop after it has been wound.

2. In a cop winding machine, the combination with a positively rotated cop holder, a-swinging frame, a traverse bar mounted on said frame, a

thread guiding member pivotally supported by said traverse bar whereby said thread guiding member may recede from said holder as the cop builds up, and means for automatically shifting the angular position of said member to progreshaving a pivotal engagement with said guide bar,

said plate having a pin and slot connection with a fixed support.

3. In a cop winding machine, the combination with a positively rotated cop holder, a swinging frame, a traverse bar mounted on said frame, a thread guiding member pivotally supported by said traverse bar whereby said thread guiding member may recede from said holder as the cop builds up, means for automatically shifting the angular position of said member to progressively shorten its effective stroke as the cop increases in diameter, said means comprising a. guide bar pivotally mounted on said frame and slidably engaging said thread guiding member, means operated by the receding movement of said thread guiding member for correspondingly rocking said guide bar on its pivot, and means for adjusting the position of said last mentioned pivot lengthwise of the cop holder, whereby the relative 4b shape of the two ends of the cap may be varied.

4. In a cop winding machine, the combination with the usual traverse bar and backing plate,

of a member secured to said traverse ,bar and.

slidably engaging the upper edge of said backing plate, and a thread guiding member pivotally mounted on said first mentioned member.

5. In a cop winding machine, the combination with the usual traverse bar and backing plate, of

a member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotally mounted on said first mentioned member, to swing in' a plane substantially parallel with the surface of thecop being wound, and means for controlling the angular position of said threadguiding-member on its pivot.

6. In a cop winding machine, the combination with the usual traverse bar and backing plate, of a member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotally mounted on said first mentioned member to swing in a plane at an angle to the axis of the cop being wound, and meansfor automatically -changing the position of said thread guiding member with respect to the other said member as the cop increases in diameter.

7. In a cop winding machine, the combination with the usual traverse bar and backing plate, of a member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotally mounted on said first mentiond member to swing in a plane at an angle to the axis of the cop being wound, and means for progressively swinging said thread guiding member on its pivot as the cop increases in diameter.

8. In a cop winding machine, the combination with the usual traverse bar and backing plate, of a member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotally mounted on said first mentioned member toswing in a plane at an angle to the axis of the cop being wound, and means for progressively swinging said thread guiding member on its pivot as the 'cop increases in diameter, said mieans comprising a pivotally mounted guide bar slidably engaged by said thread guiding member.

9. In a cop winding machine, the combination with the usual traverse bar and backing plate, of a member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotlly mounted on'said first mentioned; member, and means for progressively swinging said thread guiding member on its pivot as the cop increases in diameter, said means comprising a U-shapedguide bar one leg of which is supported on a pivot and the other leg of which slidably engages said thread guiding member.

10. In a cop winding machine, the combination with the usual traverse bar and backing plate, of a. member secured to said traverse bar and slidably engaging said backing plate, a thread guiding member pivotally mounted on said first mentioned member, and means for progressively swinging said thread guiding member on its pivot as the cop increases in diameter, said means comprising a guide bar pivotally mounted at one point and slidably engaging said thread guiding member along a portion of its length spaced from said pivot, said bar having a resilient portion between said first mentioned portion and said pivot.

11. In a cone winding machine, the combination with a traverse bar movable in a direction parallel with the axis of the cone, of a thread guiding member pivotally supported on said traverse bar to swing only in a plane at an angle to said axis, and means for progressively swinging said member on its pivot as the cone builds up.

12. An attachment for cop winding machines having a main frame, a positively rotated 'cop holder in said frame, a swinging frame carrying a traverse bar, and means for reciprocating said traverse bar, said attachment comprising a piv-'- otally mounted thread guide adapted to be secured to said traverse bar, a pivoted guide bar slidably engaging said thread guide, a plate pivotally connected with one end of said guide bar, means for pivotally mounting said plate on said swinging frame, said plate having a cam slot, and a pin adapted to be secured to said main frame and work through said cam slot.

13. An attachment for cone winding machines having a main frame, a positively rotated cop holder in said frame, a swinging frame carrying a traverse bar, a backing plate having a direct ing edge substantially parallel with the surface of the cone; and means for reciprocating said traverse bar, said attachment comprising a mem- "ber adapted to be secured to said traverse bar and slidably engaging the said edge of said backing plate, a thread guide pivotally mounted on said member, a pivoted guide bar slidably engaging said thread guide, a plate pivotally connected with one end of said guide bar, means for pivotally mounting said plate on said swinging frame, said plate-having a cam slot, and a pin adapted to be secured to said main frame and work through said cam slot.

14.'In a cop winding machine of the type wherein a reciprocatory thread guide is .piv-

otally mounted and slidably engages a movable guide bar which serves to rock said thread guide on its pivot as the cop builds up to progressively shorten its efiective stroke, a guide bar comprising a pair of substantially parallel legs connected by a bent portion, one of'said legs being pivotally supported, and the other leg being free throughout its length for slidably engaging said thread guide.

15. In a cone winding machine, the combination with a traverse bar movable in a direction parallel with the axis of the cone, of a thread guiding member pivotally supported on said traverse bar to swing in a plane at an angle to said axis somewhat greater than the angle which the surface of the cone makes with said axis, and means for progressively swinging said member on its pivot as the cone builds up.

16. In a cone winding machine, the combination with a traverse bar movable in a direction parallel with the axis of the cone, of a thread guiding member pivotally supported on said traverse bar to swing in a plane at an angle to said axis at least as great as the angle which the surface of the cone makes with said axis, and means for progressively swinging said member on its pivot as the cone builds up.

17. An attachment for cop winding machines having'a main frame, a positively rotated cop holder in said frame, a swinging frame carrying a traverse bar, and means for reciprocating said traverse bar, said attachment comprising a pivotally mounted thread guide adapted to be secured to said traverse bar, a pivoted guide bar slidably engaging said thread guide, a plate pivotally connected with one end of said guide bar, means for pivotally mounting said plate on said swinging frame, said plate having a cam slot, a bracket having means by which it may be adjustably mounted on said main frame, and a pin carried by said bracket over which pin said cam slot is adapted to work.

18. In a cop winding machine, the combination with a positively rotated 00;) holder, a swinging frame, a thread guide mounted on said frame to recede from said holder as the cop builds up, means for traversing said thread guide on said frame, means for progressively decreasswinging frame. a thread guide mounted on said frame to recede from said holder as the cop builds up, means for traversing said thread guide on said frame, means for progressively decreasing the efiective stroke of said thread guide as the cop increases in diameter, said means including a gu de bar pivotally mounted on said swinging frame, a cam operatively connected with said guide bar to rock it on its pivot, and a fixed stud with which said cam engages, said cam being shaped to permit said thread guide to be moved away clear of the completed cop without disengaging the cam from said stud.

20. In a cop winding machine, the combination with a positively rotated cop holder, a swinging frame, a traverse bar mounted on said frame, a thread guiding member pivotally supported by said traverse bar whereby said thread guiding member may recede-from said holder as the cop builds up, means for automatically 7 5 shifting the angular position of said member to progressively shorten its effective stroke as the cop increases in diameter, said means comprising a guide bar pivotally mounted on said frameand slidably engaging said thread guiding member, means operated by the receding movement of said thread guiding member for correspondingly rocking said guide bar on its pivot, and means whereby the location of said last mentioned pivot may be shifted lengthwise of the cop holder into either desired one of two positions so that the relative shape of the two ends of the cop may be varied.

21. In a cop winding machine, the combination with a positively rotated cop holder, a swinging frame, a traverse bar mounted on said frame, a thread guiding member pivotally supported by said traverse bar whereby said thread guiding member may recede from said holder as the cop builds up, means operated by the receding movement of said thread guiding member for automatically shifting the angular position of said member to progressively shorten its effective stroke as the cop increases in diameter, and means for changing at will the relative extent of suchshifting at opposite ends of the stroke, whereby the'shape of the two ends of the cop may be'varied.

22. In a cop winding machine, the combination with a positively rotated cop holder, a swinging frame, a traverse bar mounted on said frame, a thread guiding member pivotally supported 'by said traverse'bar whereby said thread guiding member may recede from said holder as the cop builds up, means operated by the receding movement of said thread guiding member for automatically shifting the angular position of said member to progressively shorten its effective stroke as the cop increases in diameter, and means for setting the mechanism to produce such shortening entirely at one end of the stroke, or

partly at one end and partly at the other, as

desired.

23. In a winding machine, the combination of a positively rotated winding spindle, a movable traverse frame, a thread guide supported by said traverse frame to adapt it to recede from the winding spindle as the package is wound thereon, means operated by the receding movement of the traverse frame to progressively shorten ,the effective stroke of the thread-guide as the package increases in diameter, and means for changing at will the relative extent of such shortening at opposite ends of the stroke of the guide whereby the relative shape of the two ends of the package may be varied.

' 24. In a winding machine, the combination of a positively rotated cop holder, a movable traverse frame, a traverse bar reciprocable on said frame, a thread-guide mounted on said traverse bar and adapted to recede from the winding spindle as the package increases in diameter, means operated by the receding movement of said thread guide for automatically shifting the position of the guide with respect to the traverse bar to progressively shorten its efiective stroke as the package increases in diameter, and means for changing at will the relative extent of such shifting at opposite ends of the stroke of the guide whereby the relative shape of the two ends of the package may be varied.

25. In a winding machine, the combination of a positively rotated cop holder, a movable traverse, frame, a traverse bar reciprocable on said frame, a thread guide supported by said traverse nism to produce such shortening entirely at one end of the stroke or partly at one end and partly at the other end as desired.

26. In a winding machine, the combination of a positively rotated cop holder, a reciprocating thread guide, a movable frame for supporting said thread guide to adapt it to recede from the cop holder as the cop increases in diameter, means for progressively decreasing the stroke of the thread-guide as the cop increases in diameter, said means comprising a guide bar pivotally mounted on the traverse frame, means operated by the receding movement of the thread guide to rock the guide bar on its pivot, and means whereby the location of said pivot may be adjusted lengthwise of the cop holder so that the relative shape of the two ends of the cop may be varied.

27. In a winding machine, the combination of a winding spindle, a movable traverse frame, a

thread guide mounted on said frame to adapt it to recede from the winding spindle during the winding of a package, means for reciprocating the thread guide on the traverse frame, means for automatically shifting the position of the thread guide on the traverse frame to progressively shorten its efiective stroke as the winding increases in diameter, means on the traverse frame for actuating said shifting means, and means for adjusting said shifting means to change at will the relativeextent of shifting of the thread guide at opposite ends of its stroke whereby the relative shape of the two ends of the package may be varied.

28. In combination, a winding spindle, a movable traverse frame, a thread guide mounted on said traverse frame to adapt it to recede from the winding spindle during the building of a package thereon, means for traversing the guide on said frame, a guide bar pivoted on the traverse frame, means for rocking said guide bar during the movement of the traverse frame, means connected to the thread guide and actuated by the guide bar to shift the thread guide to progressively shorten its eifective stroke throughout the winding, and means for adjusting the pivot of the guide bar longitudinally of the winding spindle to vary its effect in decreasing the stroke of the thread-guide so that the relative shape of the two ends of the cop may be varied.

RALPH SI-IlPMAN. 

